Pet Walker - Full-time / Part-time

I need a sitter to feed my four guinea pigs at 7 p.m. on 05/22 and again at 7 a.m. on 5/23 while I'm away. No cleaning or any other care required. Just providing a quarter of a bag of timothy hay, filling their pellet bowl, filling their water containers and giving them some vegetables. It's a 15 minute job.